Macrothrix marthae, a new species (Crustacea: Anomopoda: Macrothricidae), a highly specialized macrothricid from Mexico
Macrothrix marthae new species is described from a tropical epicontental lagoon, near the gulf coast of Mexico. The structure of the second antenna resembles some taxa related to the Macrothrix triserialis-group, but mostly to the South-American Macrothrix superaculeata (Smirnov, 1982). However, parthenogenetic females of M. marthae are characterized by both morphological differences and strong specialization for scraping in the thoracic limbs I-V. Some of these distinguishing characters are: internal distal lobe of trunk limb I with three strongly pectinate setae, limbs II, III, and V with modified setae bearing well-developed pectens. The postabdomen has small spines, with no lobe formation. The new species was found to be associated with water hyacinth roots, and the adaptations observed are thought to be used to scrape efficiently organic matter from these roots.
| Main Authors: | , |
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| Format: | Texto biblioteca |
| Language: | spa |
| Subjects: | Macrothrix marthae, Cladóceros, Morfología animal, Artfrosur, |
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